The Klipsches will go louder. I had a pair of these to try out before I went with M80s. At first I thought they sounded fantastic but I just could not relax to them due to the treble. I don't know if I had the ones with the re-designed horn or not. I also found the midrange to be too subdued and I had to sit far away from them to get a good soundstage and that simply didn't work for my space. The M60s are certainly speakers that you can relax to though with good mid-range.
If KlipschGuy was still around, he'd tell you to go with M80s rather than Klipsch
.
